Malicious PDF — malware analysis report

Static analysis result for SHA-256 0072c378863dbddd…

MALICIOUS

PDF

45.0 KB Created: 2020-11-09 07:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 925abe246cafa446aa151c8716dba784 SHA-1: 8f80fd0f5376cb1751ab38d6d1055dfb7578befb SHA-256: 0072c378863dbdddd1981395bd0eea7849a75b1b22320b600bd52ac8f75c5341
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafffi.ru/aws?keyword=7+prayers+god+always+answers PDF link annotation
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/dalerumojexos.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/6386860.pdfIn PDF document text
    • https://jonipafatanepa.weebly.com/uploads/1/3/2/7/132741476/gelurorizapov.pdfIn PDF document text
    • https://doliwejivus.weebly.com/uploads/1/3/4/3/134353379/9142990.pdfIn PDF document text
    • https://gozivuwedigati.weebly.com/uploads/1/3/4/6/134612943/sunoxoreduropova.pdfIn PDF document text
    • https://wanezevidika.weebly.com/uploads/1/3/4/5/134588498/1936123.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/komaviv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://xatimetomax.files.wordpress.com/2020/11/40458158380.pdfIn PDF document text
    • https://vuxogomirus.files.wordpress.com/2020/11/contoh_soal_akuntansi_perusahaan_dagang_lengkap.pdfIn PDF document text
    • https://temobozuz.files.wordpress.com/2020/11/punjab_university_degree_verification_challan_form_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f0081db-86b7-44f4-9d6c-c5f3eabc58fc/64647125527.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/18891709073.pdfIn PDF document text
    • https://lulofega.files.wordpress.com/2020/11/1899113559.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/develop_samsung_tv_remote_app_for_android.pdfIn PDF document text
    • https://zadireru.files.wordpress.com/2020/11/88723242797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6633c912-87fe-4323-8e3d-263b50ed6086/durexomudifobevazalag.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70BC 5304 bytes
SHA-256: 6faf8d93bb0f608045360c5969771022f87d9f4d1032364b310fff0db45fcb22
font_01_sfnt_off000082ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82EC 10428 bytes
SHA-256: 372d360f7bbdd753dc2e553977873ca8af842943b01f899bd89113e820e9a9e5